Important update: Healthcare facilities
CDC has updated select ways to operate healthcare systems effectively in response to COVID-19 vaccination.
Learn more
Find the latest information:
Aquatics FAQs
Recommendations for Fully Vaccinated People
COVID-19 Homepage
Aquatics FAQs
Recommendations for Fully Vaccinated People
COVID-19 Homepage
UPDATE
Given new evidence on the B.1.617.2 (Delta) variant, CDC has updated the guidance for fully vaccinated people. CDC recommends universal indoor masking for all teachers, staff, students, and visitors to K-12 schools, regardless of vaccination status. Children should return to full-time in-person learning in the fall with layered prevention strategies in place.
UPDATE
The White House announced that vaccines will be required for international travelers coming into the United States, with an effective date of November 8, 2021. For purposes of entry into the United States, vaccines accepted will include FDA approved or authorized and WHO Emergency Use Listing vaccines. More information is available here.
UPDATE
Travel requirements to enter the United States are changing, starting November 8, 2021. More information is available here.
Guidance for Health Departments about COVID-19 Testing in the Community
Guidance for Health Departments about COVID-19 Testing in the Community

NewOperation Expanded Testing
Operation Expanded Testing (OpET) provides no-cost screening testing for schools, underserved populations, and congregate settings.

Testing Overview
Considerations and current CDC recommendations regarding COVID-19 testing strategies
Performing Broad-Based Testing
Considerations and practical tips for health departments and healthcare providers
Testing in Community Settings
- K-12 Schools
- Institutes of Higher Education
- Non-Healthcare Workplaces
- High-Density, Critical Workplaces
- Homeless Shelters
- Correctional and Detention Facilities
Testing in Healthcare Settings
Testing Animals
Other Testing Resources
- Testing Guidance for the Public
- Calculating Percent Positivity
- Pooled Procedures for Testing
- Laboratory Resources
- Community of Practice Webinar
This webinar describes how to improve search engine results for COVID-19 testing resources.
Search COVID-19 Guidance
Find specific COVID-19 guidance from all CDC web pages and documents
Search All Guidance